Adjustable bracket.



No. 693,127. PatentedvFeb. n, 1902.,

P. H. GARDNER & F. E. VAN 00mm.

ADJUSTABLE BRACKET.

(Applicatiun filed Oct. 4, 1901.)

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UNITED STATES Fries.

ArnNr PAUL lI. GARDNER AND FRANK E. VAN DOORN, OF QUINCY, ILLINOIS.

ADJUSTABLE BRACKET.

SPECIFICATION forming part of Letters Patent No. 693,127, dated February 11, 1902. Application filed October 4, 1901. Serial No. 77,543. (No modelll To (bZZ whom, it may concern:

Be it known that we, PAUL H. GARDNER and FRANK E. VAN DOORN, of Quincy, in the county of Adams and State of Illinois, have invented certain new and useful Improvements in Adjustable Brackets; and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had tothe accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates toimprovements in adjustable metal brackets and supports therefor; and it consists in the matters hereinafter described, and pointed out in the appended claims.

In the accompanying drawings, illustrating our invention, Figure 1 is a view in perspective of a metal bracket and a supporting-bar therefor constructed in accordance with our invention. Fig. 2 is a view in vertical section of the bracket and supporting-bar. Fig. 3 is a cross-section taken upon line 3 3 of Fig. 2. Fig. 4 is a cross-section taken upon line 4 4 of Fig. 2.

As shown in said drawings, A iindicates the bracket as a whole, and B an upright supporting-bar for the bracket. The said bracket consists of a bar of metal A, which is bent at right angles near one of its ends so as to form a horizontal arm a and a vertical arm a, which extends downwardly from the inner end of said horizontal arm. The said hori- 'zontal arm a of the bracket constitutes the support, upon which rests and to which may be secured a shelf or like object to be supported.

A indicates a brace which connects the outer part of the horizontal arm a of the bar A with the vertical arm a of said bar. Said brace is made of a round bar of metaland is connected at its outer end with the horizontal arm a of the bar A by having its upturned end inserted through an aperture in said arm and secured therein by riveting. The inner end of the brace-rod A is inserted through an aperture in the vertical arm a near the lower end of said arm, and said bar extends through said vertical arm and projects beyond the rear face thereof, so as to form a stud a Preferably the part of the brace-rod which extends through the vertical arm a is'made detachably connecting the bracket A with the supporting-bar B, the said upright arm to having a flat rear face from which the studs 0 and a project and which when the studs are engaged with the keyhole-slots in the bar B rest in contact with the fiat outer face of said bar. Said supporting-bar B consists of a fiat central or web portion 17, having two marginal rearwardly-extending flanges b b, giving to the bar a channel or U shape in crosssection. Said bar is adapted to be attached to a wall or like Vertical support with its flanged or channel side toward said wall or support and the edges of its flanges bearing against the same. For attaching the said support B to the said wall or other supportingsurface the said bar is shown as provided near its ends with screw-holes b through which are inserted holding-screws 19 In the web portion 19 of the said supporting-bar B or between the flanges thereof are formed a series of openings or slots B B, which are of keyhole shape or provided with enlarged upper ends and narrower lower ends. These keyhole-slots B are made of the proper size in their upper or enlarged ends to receive the headed stud O of the bracket, the narrower or lower portions of the keyhole-slots being made of less width than the diameter of the head of said stud and approximatelythe same in size as the shank of the said stud, so that when the stud is inserted through the upper or enlarged part of one of the keyhole-slots and then drawn downwardly into the lower part thereof the head will engage the metal at each side ofthe said lower part, and thereby confine the upper part of the vertical arm of the bracket against the supporting-bar B. The stud a which is formed by the end of the brace-rod A is located at a distance from the headed stud 0 equal to the distance between any two of the keyhole-slots BB, or, in other words, said headed stud and stud of are spaced equally with the spacing of the keyhole-slots, so that when the headed stud is engaged with the lower or narrower part of one of the keyhole-slots the lowermost stud a will be engaged with the narrower lower part of the keyhole-slot next below it. It follows from this construction that while the headed stud afiords a means of confining the upper part of the vertical arm of the bracket in contact with the supporting-bar B the lowermost stud a holds the lower part of said vertical arm of the bracket from lateral or sidewise'movement, so that the two studs together confine the bracket rigidly in place on the supporting-bar.

Manifestly in the use of the supporting-bar and bracket made as described the bracket may be readily and easily adjusted as to its elevation or vertical position, said bracket being readily disengaged from the supportingbar by lifting the same until the head of the stud thereof is imposition to be drawn out of the enlarged part of the keyhole-slot engaged therewith and as readily introduced into a keyhole-slot above or below the same.

The adjustable bracket and supporting-bar made as described may be applied to a great variety of uses-as, for instance, as a means of supporting shelves in a store-window, shop, or'bookcase, or for. any other purpose where an adjustable support or bracket is desired.

We claim as our invention 1. Thecombinationofasupporting-barprovidcd with keyhole-slots, and a bracket consisttng of a metal bar bent to form horizontal and vertical arms, a brace-bar secured to the outer end of said horizontal part and to the lower part of said vertical arm, said bracerod extending through and projecting. from said vertical arm so as to form a projecting stud, and a headed stud attached to the upper part of said Vertical arm.

2. The combination of a supporting-bar having a fiat central part or web and marginal rearwardly-extending flanges, and provided with keyhole-slots in said central part or web, and a bracket consisting of a bar bent to form horizontal and vertical arms, a brace-rodattached at its ends to the said horizontal and Vertical arms, said rod extending through and projecting from said vertical arm, so as to form a projecting stud, and a headed stud at,-

tached to the upper part of said vertical arm,

said studs being adapted for engagement with said keyhole-slots of the supporting-bar.

In testimony that we claim the foregoing as our invention we affix our signatures, in presence of two witnesses, this 26th day of September, A. D. 1901.

PAUL H. GARDNER. FRANK E. VAN DOORN. 

